Table 1.

Characteristics of the study population.

	Age Group
	<12 y (n = 1205)		≥12 y (n = 491)		Total (n = 1696)
	n	%	n	%	n	%
Parent completing the survey
Father	198	16.4%	114	23.3%	312	18.4%
Mother	1006	83.6%	375	76.7%	1381	81.6%
Respondent’s age (years)
Median (IQR)	40 (36–45)		48 (44–51)		42 (37–47)
Geographic area
Northern Italy	211	17.7%	134	27.6%	345	20.6%
Central Italy	898	75.3%	325	66.9%	1223	72.9%
Southern Italy	83	7.0%	27	5.5%	110	6.5%
Respondent’s education
Primary or secondary school certificate	25	2.1%	23	4.7%	48	2.9%
High school certificate	271	22.7%	150	30.8%	421	25.0%
University degree or more	900	75.2%	314	64.5%	1214	72.1%
Number of household members
2	64	5.4%	37	7.7%	101	6.1%
3	582	49.2%	135	28.0%	717	43.1%
4	424	35.9%	221	45.8%	645	38.7%
5 or more	112	9.5%	89	18.5%	201	12.1%
Number of children in the household
1	657	54.5%	203	41.3%	860	50.7%
2	462	38.3%	216	44.0%	678	40.0%
3	74	6.2%	57	11.6%	131	7.7%
4 or more	12	1.0%	15	3.1%	27	1.6%
Presence of at least one person with an underlying disease in the household
No	1542	88.2%	1045	89.7%	407	84.6%
Yes	194	11.8%	120	10.3%	74	15.4%
Respondent’s influenza vaccination for the 2020/2021 season
No	794	67.9%	364	75.2%	1158	70.0%
Yes	376	32.1%	120	24.8%	496	30.0%
History of COVID-19 in at least one household member
No	999	85.4%	377	77.9%	1376	83.2%
Yes	171	14.6%	107	22.1%	278	16.8%
Respondent’s COVID-19 vaccination
No, I have had COVID-19 less than 3 months ago	10	0.9%	7	1.5%	17	1.0%
No, I won’t get the vaccine	244	21.0%	159	33.1%	403	24.5%
Vaccinated/plan to get the vaccine	826	7.1%	284	59.0%	1110	67.5%
I am not sure	84	7.2%	31	6.4%	115	7.0%